Inventor · disambiguated record

Karl E. Oppermann, Sr.

Also filed as: OPPERMANN SR KARL E

1 granted patent·15 citations·filing 1980–1980

38Inventor score

Files withOPPERMANN SR KARL E1

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1 record

0160USD266492SCombined whistle and cricket noise maker for use as a divers signal above and below the water surfaceOPPERMANN SR KARL E·Filed 1980·Granted Oct 12, 1982·15 cites·1 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →